Use the given graph of f(x) = ax2 + bx + c to solve the specified inequality.f(x) > 0
A. x > -3
B. x ? -3
C. All real numbers
D. No solutions
Answer: D
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Find the exact value using a double-angle identity.tan(300°)
A. - 
B. 
C. - 
D. 0
Find an equation for the ellipse described.Center at (-2, 5); focus at (-6, 5); contains the point (-7, 5)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Decide if the answer is reasonable or unreasonable by using front end to estimate the answer. If the exact answer is not reasonable, find the correct answer.73.07 ÷ 28.5 = 0.256
A. Unreasonable, should be 25.6 B. Unreasonable, should be 2.56 C. Reasonable D. Unreasonable, should be 0.0256
Solve the problem.If a rock falls from a height of 60 meters on Earth, the height H (in meters) after x seconds is approximately H(x) = 60 - 4.9x2.When does the rock strike the ground? Round to the nearest hundredth, if necessary.
A. 3.5 sec B. 1.58 sec C. 2.5 sec D. 12.24 sec